NME reports that the entire Michael Jackson back catalog was stolen by computer hackers. The catalog includes unreleased material from the Bad, Off the Wall, and Thriller sessions and includes previously unreleased duets with Freddie Mercury, the late lead singer of Queen, and will.i.am of the Black Eyed Peas.

Sony purchased the catalog from Michael Jackson's estate back in 2010 for over $250 million, and has since release some of the material on the posthumous Michael.

A source of The Sunday Times in the UK reports that, "Everything Sony purchased from the Michael Jackson estate was compromised. It caused them to check their systems and they found the breach. There was a degree of sophistication. Sony identified the weakness and plugged the gap."

No word from Sony directly to confirm the extent of the theft.